Jetpack Boost


This is pre-release software. Please do not install on production sites until we release 1.0.0.

Jetpack Boost provides one-click optimizations that supercharge your WordPress site’s performance and SEO.

Jetpack Boost provides you with a simple way to check your site’s performance according to the latest standards used by the world’s most successful web sites. Improving performance is increasingly important for SEO as search engines prioritize user experience alongside relevance in their ranking algorithms.

This alpha release includes three powerful performance modules, with more to come:

  1. Local Critical CSS generates optimized styles for your homepage, posts and pages. This can allow your content to show up on the screen much faster, particularly for viewers using mobile devices.

    Read more about critical CSS generation at

  2. Defer Non-Essential Javascript moves some tasks to after the page loads, so that important visual information can be seen sooner.

    Read more about deferring javascript at

  3. Lazy Image Loading only loads the images the user can see. As the user scrolls, images are loaded just before they show up on the page. This simple optimization makes sites faster and saves bandwidth for your host and your customers.

    Read more about lazy image loading at

We are working hard to bring more features and improvements to Jetpack Boost. Let us know your thoughts and ideas!


  • Manage your Jetpack Boost settings


  1. Install Jetpack Boost via the plugin directory, and activate it.
  2. Visit the “Jetpack Boost” section of your site’s WP Admin.
  3. Turn on the performance features you would like to try out on your site.


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Contributors & Developers

“Jetpack Boost” is open source software. The following people have contributed to this plugin.


“Jetpack Boost” has been translated into 6 locales. Thank you to the translators for their contributions.

Translate “Jetpack Boost” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Release date: 12/29/2020
  • First public beta release